Question

5. By which smallest number must 5400 be multiplied to make it a perfect cube who will tell correct will be marked as.......​

Answer 1

Answer:

15

Explanation:

5400=2*27*100=2*3^2*10^2

If we multiply this by 3*10/2, we will get:

2*3^2*10^2*3*10/2=3^3*10^3= 30^3= 81000

3*10/2=15

Answer 2

Answer:5

Explanation:The prime factors of 5400 are 3×3×3×2×2×2×5×5

So while grouping 5 is left ungrouped(because while taking out the cube root of the number by prime factorisation method the numbers must be grouped in triplets)

So 5 must be multiplied with 5400 to make it a perfect cube.

Hope this helps you...